Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Integrating analog/digital converter










Image Number 16 for United States Patent #6285310.

An analog/digital converter including an amplifier (1) wired as an integrator, a comparator (2) electrically downstream from the integrator, a time counter (6) which continually counts the pulses of a pulse generator (5), a bistable element (4), and additional circuitry. The bistable element (4) drives the input network of the amplifier (1) with at least one switch (3) in such a way that in one of its two positions ("off" condition) a current I.sub.x proportional to the analog measured value is integrated, and in the other position ("on" condition) a constant reference current I.sub.ref with opposite polarity to the current I.sub.x is integrated in addition to current I.sub.x. The switching of the bistable element from the "off" condition to the "on" condition is controlled by the time counter, and the switching from the "on" condition to the "off" condition (switch-off time) is controlled by the output signal of the comparator, which is generally synchronized with the pulses of the pulse generator. The pulses of the pulse generator (5) are summed to a result during the time the bistable element is in its "on" position. The additional circuitry displaces the switch-off time of the bistable element (4) beyond the time resulting from the above synchronization by a number of pulses of the pulse generator (5) determined by an arithmetic unit (31).








 
 
  Recently Added Patents
Bi-directional, compact, multi-path and free space channel replicator
Integrated transmit/receive switch
Scalable pixel coverage function-map
Bicycle shifting method
Sonic fast-sync system and method for bluetooth
Visibility radio cap and network
Photoconductor cartridge
  Randomly Featured Patents
X-ray detector and detector module
Fully-automatic antenna driving device
Air depolarized electrochemical cells
Soft keyboard display for a portable multifunction device
Acoustic surface wave device using single crystal of Tl.sub.3 VS.sub.4 or Tl.sub.3 NbS.sub.4
Continuous wavelength tuning of DBR laser
DAT recorder with automatic cassette movement
Telephone set base for both wall and desk mounting
Method of manufacturing bipolar transistor having emitter region and external base region formed in self alignment manner
Shock-absorbing product carrier